Illuminated Door Handle Circuit Board Vibration Support
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Solution Overview
Problem
Existing door handle designs with light emission units face issues where vibrations during vehicle travel cause deformation of the circuit board due to external forces, leading to unstable connections and increased manufacturing costs when using dedicated support members to mitigate this.
Innovation Solution
A door handle design featuring a combination member with a housing and light guiding lens that supports the circuit board, where the connection code is wound around the combination member to reduce load transmission to the circuit board, and an elastically deformable bushing is used for additional support without increasing the number of components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dedicated support member for supporting the connection code is used, then the load applied to the circuit board is reduced, but the number of members increases leading to high manufacturing cost
Solution Approach 1:
The patent combines the support function into the existing housing structure rather than adding a separate dedicated support member. The housing is designed to directly support the connection code, merging the structural support function with the existing housing component, thus reducing the number of members while maintaining connection stability and reducing load on the circuit board.
Solution Approach 2:
The housing serves multiple functions: it provides structural enclosure, supports the connection code, and reduces external force transmission to the circuit board. By making the housing multi-functional, the patent eliminates the need for dedicated support members while maintaining reliability.
2Ease of manufacture
If the connection code is passed through the housing, then the manufacturing process is simple, but external forces during vehicle travel cause load on the circuit board leading to deformation or unstable connection
Solution Approach 1:
The connection code support structure is segmented into distinct regions: a first support portion for initial support and a second support portion for additional support. This segmentation allows the connection code to be supported at multiple points along its path, reducing the load on any single point (particularly the circuit board) while maintaining a relatively simple manufacturing process.
Solution Approach 2:
The housing acts as an intermediary structure between the external environment and the circuit board. It provides support portions that intercept and distribute external forces before they can reach the circuit board, thus protecting the connection while maintaining manufacturing simplicity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively reduces the load on the circuit board while maintaining user-friendliness and preventing connection code displacement or breakage, thereby avoiding increased manufacturing costs and enhancing the door handle's stability and durability.
Implementation Method 1
the light guiding lens guides light emitted from the light emission element in a predetermined direction
Implementation Method 2
an elastically deformable bushing fitted onto the connection code
Data Source
AI summary
A door handle includes a casing inside which an accommodation space is provided, and a lamp unit disposed in the accommodation space. The lamp unit includes a light emission element, a circuit board on which the light emission element is mounted, and a combination member including a housing and a light guiding lens. The housing supports the circuit board, and the light guiding lens guides light emitted from the light emission element in a predetermined direction. In the door handle, a connection wire that supplies driving current to at least the light emission element is connected to the circuit board, and a portion of the connection wire is wound around a portion of the combination member.